Sawmill set-works.



No. 650,626. Patented May 29, |900. F. J. WO0D &. P. L. LACHAPELLE.

SAWMILL SET WORKS.

(Application Bled Feb. 5, 1900.) (No Model- A 3 sheets-Sheet l.

Tnlnonms PETERS' 6o; PHoTo-Lrmo.. WASHINGTON. n, c.

No. 650,626. Patented May 29,1900. F. J. WOOD & P. L. LACHAPELLE.V

SAWMILL SET WORKS.

Application led Feb. 5, 1900.) (No Model.) 3 Sheets-Sheet 2.

Wihjasses summon, u. c.

No'. 650,626.- Patented may 29. |900. F. J. woon a. P. L. LACHAPELLE.

SAWMILL SET WORKS.

(Application med Feb. s. 1900.) (N0 Model.) 3 ASheS--Shf 3.

UNITED STATES PATENT FREDERICK J. VOOD AND PATRICK L. LACIAPELIJE, OF IIOQUIAM,

WIASIAIINGTON. I

SAWMILL SET-WORKS.

SPECIFICATION forming part of Letters Patent No. 650,626, dated May 29, 1900.

Application led February 5, 1900. Serial No. 4,061. (No model.) f

To all whoml it may concern:

Be it known that we, FREDERICK J. WOOD and PATRICK L. LAGHAPELLE, citizens of the United States, residing at Hoquiam, in the county of Chehalis and State of W'ashington, have invented new and useful Sawmill Set- Vorks, of which the following is a specification.

Our invention is an improved power apparatus for the set-works of a sawmill-carriage, the object of our invention being to provide a simple and etiicient combination of devices for applying power to the set-works toadjust the knees on the head-block and set the Saw-log.

Our invention consists in the combination, with a pair of oppositely-disposed frictionwheels on the set-shaft of the carriage, of a traveling power-cable and a laterally-movable power-shaft rotated by said cable and having a friction-wheel disposed between the opposing faces of the wheels on the set-shaft, and hence adapted to be engaged with either of said wheels and to be disengaged from both of them.

Our invention further consists in the peculiar construction and combination of devices hereinafter fully set forth, and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a top plan view of a sawmill-carriage provided with our improved power apparatus for the set-works thereof. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is a vertical transverse sectional View taken on the line 3 3 of Fig. 1. Fig. 4 is a detail sectional view taken on the line 2 2 of Fig. 1. Fig. 5 is a detail sectional View taken on the line 5 5 of Fig. 4. Fig. Gis a detail sectional view at right angles to Fig. et.

The sawmill-carriage 1 travels on the track 2 and is provided with the hollow head-blocks 3, the knees 4, supported by and guided in said hollow head-blocks, and the screw-shafts 5, disposed and having their bearings in the hollow head-blocks and having the dangecollars 6, which receive the screw-threads on the screw-shafts, and hence travel back and forth thereon when said screw-shafts are rotated, said flange-collars being disposed in recesses 7 in the under sides of the knees,

and hence communicating their motion to the said knees, and being thereby adapted to move the latter back and forth on the headblocks, as will be readily understood.

A longitudinally-disposed set-shaft 8 is j ournaled in suitable bearings 9 on the carriage, near the inner side thereof, and said set-shaft is connected to the screw-shafts 5 by the pairs of miter gear-wheels 10, which are keyed to said set-shaft and said screw-shafts, and hence rotate the said screw-shafts in unison with each other when said set-shaft is rotated.

A pair of friction-wheels 11 are disposed on the set-shaft 8 at suitable points thereon and at a suitable distance apart and are keyed to said setshaft. The opposing frictionfaces 12 of the said wheels are of truncated conical form, as shown in Fig. 1.

Ashaft 13, which is disposed at right angles to the set-shaft 8 at a point between the friction-wheels 11, is mounted at one end in a pivoted bearing-box let, the pivotal bolt 15 of which extends through the beam 16, that constitutes a portion of the frame of the carriage. The said shaft 13 has its bearing at a suitable distance from its inner end in an eccentric sleeve 17, which is supported and adapted to rotate in a suitable bearing 18, which is bolted on a plate 19, that is bolted on the platform of the carriage, as at 20. A shifting lever 21 is secured firmly to one end of the said eccentric sleeve', or the same may be formed integrally therewith, as shown in Fig. 5. A friction-cone 22 is keyed to the shaft 13 at its inner end and is disposed between the opposing truncated conical faces of the friction-wheels 11, the latter being at such a distance apart that by shifting the shaft 13 to a position exactly midway between said friction-wheels the said friction-cone will be out of engagement with both of them, as shown in Fig. 1. Byturning the hand-lever in one direction or the other, and thereby partially rotating the eccentric sleeve, the shaft 13 may be moved in either direction, and hence cause the friction-cone to'be brought in operative contact with either of the friction-wheels. A lock-plate 23 is supported by a pairfof standards 24, which rise from the bearings 18, and the lever 21 bears against said lock-plate and is provided with a keybolt 25, which is adapted to engage a notch 26 in the upper side of the lock-plate when the hand-lever is in a vertical position and lock the shaft 13 in its normal position, with its friction-cone out of engagement, with both of the friction-wheels. A sheave 27 is keyed on the shaft 13 at a suitable point between the bearings of the said shaft.

An endless traveling cable 2S is arranged parallel with the track and below the same and is supported by a single sheave 29 and a double sheave 30, the cable passing twice around the double sheave to form a bight 31, which is engaged by a tension sheave 32, mounted in suitable bearings and capable of movement back and forth in or upon a suitable supporting-guide 33. A weight 3i is connected to the movable bearing of the tensionsheave by a suitable cord or chain 35, the function of the said Weight and of the tension-sheave being to take up slack iu the endless cable and preserve the latter at suitable operative tension. The upper side of the cable passes over the sheave 27 on the shaft 13 and under the pair of guide-sheaves 36, which have suitable bearings supported by the carriage, the said guide-sheaves being arranged on opposite sides of the sheave 27. The endless cable when vthe sawmill is at work is driven by any suitable source of power and travels continuously in one direction, and hence causes the shaft 13 to be in constant rotation, regardless of whether the sawmillcarriage is moving 0r stationary on its track.

The operationof ourinvention is as follows: When it is desired to set or move the knees on the head-blocks in either direction, the friction-cone is brought in contact with the appropriate friction-wheel by moving the lever 2l so as to shift the inner end of the shaft 13, this being done by au operator stationed on the sawmill-carriage. The shaft 13, carrying the friction-cone, being constantly rotated by the endless traveling cable, as soon as the friction-cone is brought into contact with one of the 4friction-wheels the set-shaft 8 will be rotated and the latter will communicate rotary motion to the screw-shaft to which it is geared, and hence cause the knees to move simultaneously and at a uniform rate .carriage when a sawlog is to be mounted thereon or to set them so as to determine the thickness of the lumber to be sawed from the sawlog.

Having thus described our invention, we claim- 1. In sawmill set-works, the combination, with a pair of oppositely-disposed frictionwheels on the set-shaft of the carriage, of a traveling cable, and a laterally movable power-shaft, rotated by said cable, and having a friction-wheel disposed between the opposing faces of the wheels on the set-shaft, and adapt-ed to be engaged with either of said friction-wheels, and to be disengaged from bothof them, for the purpose set forth, substantially as described.

2. The combination, with a traveling sawmill-carriage, of an endless traveling cable, a set-shaft mounted on the carriage, having a pair of friction-wheels, a power-shaftmounted on the carriage, and having the sheave engaged and rotated by the endless cable, a

friction-wheel on said power-shaft, disposed between the friction-wheels on the set-shaft, and alever to operate said friction-wheel, substantially as described.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in the presence of witnesses.

FREDERICK J. WOOD, PATRICK L. LACI-IAPELLE. Witnesses to the signature of Frederick J. Wood:

C. L. THAYER, G. A. HoLsTE.

Witnesses to the signature of Patrick L. l

Lachapelle:

J. O. SrEARNs, WM. B. OGDEN. 

